php - 无法创建表

Question

我已经写了这段代码，但仍然无法在数据库中创建表。只是输出是:

"database created.... Sorry Table Not Created".

<?php                                   
    include 'connection.php';
    //Creating database
    $creatingdatabase = "CREATE DATABASE IF NOT EXISTS quest";
    $query1 = mysqli_query($con, $creatingdatabase);
    if($query1){ 

        echo "database created....";
        //creating tables
        $creatingtable = "CREATE TABLE quiz (
                        id INT(6) AUTO_INCREMENT PRIMARY KEY,
                        questions VARCHAR(255) NOT NULL,
                        optiona VARCHAR(255) NOT NULL,
                        optionb VARCHAR(255) NOT NULL,
                        optionc VARCHAR(255) NOT NULL,
                        optiond VARCHAR(255) NOT NULL, 
                        answer VARCHAR(50) NOT NULL
                                                )";
        $query2 = mysqli_query($con, $creatingtable);
        if($query2){echo "table created...";}
        else { echo "sorry... table not created"; }

    }
    else { echo "database can not be created"; }
?>

Answer 1

CREATE TABLE语句需要指定要使用的数据库，或者需要使用mysqli_select_db()设置默认数据库。

$creatingdatabase = "CREATE DATABASE IF NOT EXISTS quest";
$query1 = mysqli_query($con, $creatingdatabase);
mysqli_select_db($con, "quest");